REPAIR/MAINTENANCE OF AC PLANT WITH CONNECTED ITEMS AT GE NAGROTA

Amount

M&L for cleaning of shell and tube water cooled condensers of the AC plants of following capacities after dismantling the water lines and headers and cleaning with suitable wire brush and washing soda to remove the dirt and water scaling and refixing the water lines and headers including provision of new gaskets, in every 04 moths etc complete all as directed by Engr-in-Charge.

(a) 52 TR capacity at Signal Center

(b) 52 TR capacity at OPS Room

(c) 15 TR capacity at 4 ASD

Supply and charging compressor oil Servo manufactured by Indian Oil Corporation or Equivalvent of approved make including flushing/cleaning of oil chamber etc complete all as directed by Engr-in-Charge.

Nitrogen testing for any capacity of compressors including condensing unit and gas piping complete as per the manufacturer's instructiions and to the entire satisfaction of the Engineer in Charge. Note :- (i) Nitrozen pressure should be held with out any drop in pressure inside the unit continuously for 24 hrs after leakage testing required gas will be filled and to the entire satisfaction of the Engineer in Charge.

Supply and filling Nitrogen Gas Cylinder of 61 Kg Each cylinder complete

Supply and filling Refrigerant gas R-407 of 61 Kg Each Cylinder for AC plant compressor

Supply and filling Refrigerant gas R-22 of 61 Kg Each Cylinder for AC plant compressor

M&L for servicing monoblock pumps including dismantling and opening the pump, repair/replacement of defective Ball Bearing,Roller Bearing, impeller,replace the worn out bearing impeller, stuffing box, back plates, gland packing mechincal seal and rusted nut, bolts etc assembling property, greasing all movable parts, fixing in position, testing and commissioning all as directed for upto 5 HP pumps.

All as per Srl item No. 7 above but upto 7.5 to 10 HP

All as per Srl item No. 7 above but upto 10 to 15 HP

Supply and fixing in repair power assembly expansion valve for upto 52 TR AC plant at EHU / ERS. Make –SPORLAN, Model SVE 42 or equivalent as per the existing or from the makes given in particular specifications.

Supply and fixing in repair MVPD for up to 52 TR capacity at Old AC plant Model:- As per existing make.

Supply and fixing of V-belt size C 2650/ C-102 including taking down old belt .

All as per Srl item No. 10 above but of size B-112 .

All as per Srl item No. 10 above but of size B-82.

Realignment of compressor and motor of any capacity on existing foundation.

Supply and fixing of CI butterfly valves of following dia with matching flanges,gaskets,hardware duly insulated with preformed pipe section fabricated to shape and bonded with adhesive. Removable cover is required in valves shall be of 26swg aluminium sheet,cover should be divided in to portions for quick release and toggles shall be used for assembly of covers :- Make :Leader/BIR/Prayag or equivalent from the makes given in particular specifications.

(a) 50 mm bore.

(b) 65mm bore.

Supply and fix High pressure control switch type MP-5 including taking down old switch. Make:- As per existing make.

Supply and fix oil pressure control switch type MP-55 including taking down old switch. Make:- As per existing make.

Supply and fix low pressure control switch type MP-01 including taking down old switch. Make:- As per existing make.

Supply and fix LP/HP cut out type MP-15 including taking down old cutout. Make:- As per existing make.

All as per Srl item No 18 above but type ML-4 Make –As per existing make

All as per Srl item No 18 above but type ML-3 Make – As per existing make

All as per Srl item No 18 above but type ML-2 Make – As per existing make

All as per Srl item No 18 above but type ML-1.5 Make – As per existing make

Supply and fixing power contact assembly complete of type MNX-25 including taking down old contactor Make – L & T, Cat Part No CS 94110 or equivalent from the makes given in particular specifications.

Supply and fixing power contact assembly complete of type MNX-12 with one NO and NC including taking down old contactor Make – L & T or equivalent from the makes given in particular specifications.

Supply and fixing power contact assembly complete of type MNX 32 including taking down old contactor Make – As per existing make

Supply and fixing spare Kit without coil type MU-1 including taking down old kit. Make – As per existing make

All as per Srl item No. 26 above but of type ML-1.5 as per Cat Part No SS91851 . Make – As per existing make

All as per Srl item No. 26 above but of type ML-2 Make:- As per existing make .

All as per Srl item No. 26 above but of type ML-3 Make:- As per existing make .

All as per Srl item No. 26 above but of type ML-4 Make:- As per existing make .

Supply and fixing Overvoad relay having range 9-15 amps . Make –As per existing make suitable for ML-1/ML-1.5 contactor

Supply and fixing Overload relay having range 20-33 amps . Make –As per existing make suitable for ML-2/ML-3 contactor

Supply and fixing Overload relay having range upto 7.5 amps. Make –As per existing make suitable for MNX contactor

Supply and fixing electronic timer ST 100 (3 to 10 Sec) 240V or as per existing specifications including taking down old one. Make –As per existing make

Supply and fixing electronic timer ST 100 ST 100 (3 to 30 Sec) 415 Volts AC 50 HZ including taking down of old one. Make –As per existing make as GIC suitable to the existing panel board

Supply and fixing indicator lamp assembly complete LED type suitable for the existing system supply voltage for the existing system supply voltage 230V / 440 V AC including taking down old lamp assembly Make – Mimic control/AEC/C&S or equivalent from the makes given in particular specifications.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 250 Amps breaking capcity 25 KA. Make –L &T or equivalent from the makes given in particular specifications.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 40 Amps breaking capcity 25 KA. Make –L &T or equivalent from the makes given in particular specifications.

Supply and fixing in repair of MCCB 3 pole 415 volts AC , 32 Amps breaking capcity 25 KA. Make –L &T or equivalent from the makes given in particular specifications.

Dismantling the unserviceable electric motor of any type and capacity and transporting to reputed workshop, taking out old and burnt winding wire and rewinding with super enameled copper winding wire of existing gauge and size with insulating materials, varnishing and baking etc, re-fixing the same at site and re-alignment, testing and commissioning complete all as directed by Engr-in-Charge

Taking out old and unserviceable PVC fins of cooling tower of any capacity AC plant and replacing with new one including setting complete. Make : Mihir or equivalent from the makes given in particular specifications.

Supply and fix in repair in repair DOL starter suitable for 5HP motor capacity 9 to 14 Amp complete with over load relay , single phasing preventer under volt release etc . Make L&T or equivalent in Schneider / Havells or equivalent from the makes given in particular specifications.

Supply and fix in repair in repair DOL starter suitable for 10 HP motor capacity 14 to 23 Amp complete with over load relay , single phasing preventer under volt release etc . Make L&T or equivalent make as Schneider / Havells or equivalent from the makes given in particular specifications.

Preparation of old painted surfaces by removing dust,rust etc and, applying two coats of synthetic enamel paint with spray gun of approved make and colour for cooling tower,condensing pipe line condenser water pumps including all pipe line valves etc. of 5 TR to 60 TR Capacity Plant.

Supply and fix CT fan (with hub and fan blade) of capacity 5 to10 HP for cooling tower all as specified and directed by Engr-in-Charge

S & F in repair chilled water sensor for AC Plants of any capacity

S & F solenoid valve assembly complete for compressor of capacity upto 15 TR.

S & F solenoid valve assembly complete for compressor of capacity from upto 52 TR.

S & F loading/unloading switch assembly for compressor of capacity upto 15 TR.

S & F loading/unloading switch assembly for compressor of capacity from upto 52 TR.

S & F microprocessor for compressor of capacity upto 15 TR of existing model

S & F microprocessor for compressor of capacity from 52 TR of existing model

S & F cooling tower nozzles 1/4'' size of existing model

S & F block bearing for air handling unit of existing size and model

Dismantling the compresor and taking out the shaft from the compressing unit and taking to the reputed workshop for necessary lathe/ machining work to match the bearing size, cleaning inside the compresing unit and necessary overhauling complete as directed .Installation of compressor and connect with motor , alingment and carrying out of testing to the entire satisfaction of Engr-in-charge for compressor model of 3 X 7.5 TR capacity at ASD. Note : Defective Spares required to be replaced shall be measured and paid seperately under appropriate items of this schedule.

Supply in replacement of following spares for 3 X 7.5 TR capacity at 4ASD:-

(a) Main bearing ( U/S upto 0.5 mm) for both ends

(b) Connecting rod bearing

(c) C R bush

(d) Pistons

(e) Pistons pin

(f) Piston ring set

(g) Piston circlips

(h) C R Nuts & bolts

(j) S V Reeds

(k) D V Reeds

(l) S V Springs

(m) D V Spring

(n) Suction filter drayer.

(o) Oil pump

(p) Linear 'o' ring

(q) Gasket set

(r ) Thrust washer

(s) Aluminium Gasket set

(t) Rocker arm with cup & washer

(u) Oil pressure regulating valve

(v) Rocker arm spring

(w) Suction and discharge valve O ring set

S & F in repair water Flow Gauge Meter for AC Plants of any capacity

S & F in repair Oil Pressure Gauge Meter for AC Plants of any capacity

S & F in repair Refrigerant Gas Pressure Gauge Meter for AC Plants of any capacity

Supply and fixing in repair of 13 TR semisealed/sealed compressor with modification to existing system including testing complete all as specified and directed by Engr-in Charge. Make Kirloskar, Brite or equivalent from the makes given in particular specifications.

Repair and maintenance of AC plant heater including internal wiring and replacement of any part of internal body all as specified and as directed by Engr-in-charge.

Supply and fix of Humidistat of AC plant up to 52 TR capacity including all accessories

Note:- Schedule of credit Rs. 32,800.00 will be deducted from total amount quoted while accepting the bid. Details of schedule of credit is given in tender documents.

Allied Technologies